Parameters

For di_prom_prop_lookup_bytes(), the address of a pointer to an array of unsigned characters.

For di_prom_prop_lookup_ints(), the address of a pointer to an integer.

For di_prom_prop_lookup_strings(), the address of pointer to a buffer.

prop_name

The name of the property being searched.

Description

These functions return the value of a known PROM property name and value type and update the prop_data pointer to reference memory that contains the property value. All memory allocated by these functions is managed by the library and must not be
freed by the caller.

Return Values

If the property is found, the number of entries in prop_data is returned. If the property is a boolean type, 0 is returned and the existence of this property indicates the value is true. Otherwise, -1 is returned and errno is set to indicate the error.

For di_prom_prop_lookup_bytes(), the number of entries is the number of unsigned characters contained in the buffer pointed to by prop_data.

For di_prom_prop_lookup_ints(), the number of entries is the number of integers contained in the buffer pointed to by prop_data.

For di_prom_prop_lookup_strings(), the number of entries is the number of null-terminated strings contained in the buffer. The strings are stored in a concatenated format in the buffer.